The short answer
Most people pay no premium for Medicare Part A, because they or a spouse paid Medicare taxes for at least 40 quarters (10 years) of work. But Part A isn't entirely free even then: it has a hospital deductible you pay if you're admitted, plus coinsurance for long stays. And people without enough work credits can pay a monthly Part A premium.
So premium-free doesn't mean cost-free — understanding the deductible matters if you're hospitalized.
Who pays a Part A premium
If you have 40 work credits, Part A is premium-free. If you have some but fewer than 40, you can buy in at a reduced monthly premium; with very few credits, you pay the full amount. You may also qualify on a spouse's record. Our guide to getting Medicare with fewer than 40 work credits covers those paths.
This mainly affects people who spent limited time in Medicare-covered employment, including some immigrants and long-term homemakers.
The hospital deductible and coinsurance
Even with premium-free Part A, if you're admitted to the hospital you pay the Part A deductible per benefit period, and for very long stays there's daily coinsurance after a set number of days. This is one of the gaps a Medigap plan is designed to cover, which is why supplements are popular. Our overview of what Part B covers rounds out the picture on the outpatient side.
The practical point: budget awareness of the hospital deductible matters, and coverage that fills it makes a hospital stay far more predictable.
Frequently Asked Questions
Is Medicare Part A free?
Premium-free for most people who have 40 work credits (or qualify on a spouse's record). Those with fewer credits can pay a monthly Part A premium.
Does premium-free Part A have any costs?
Yes. If you're admitted to the hospital, you pay the Part A deductible per benefit period, plus daily coinsurance for very long stays. A Medigap plan can cover these.
How much is the Part A premium if I have to pay it?
It depends on your work credits — a reduced amount if you have some credits, the full amount if you have very few. You pair it with the standard Part B premium.
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